I have gone back and replayed the Alternate version of the game. Actually I think its the first version before it was decided to change the music for copyright reasons.
Only reason really for recording this again was to show the few seconds of the special attack music in the zombie levels. I have also shown a few more spots where you can become the robot although there are still a few more I didn't find. becoming the robot only really serves to highlight where the children are. Shooting everything up has no bearing on the number of enemies you need to kill.